I have two cats, with very different personalities. One (male) is not afraid of anything or anybody. The other (female) runs away as soon as she hears someone new in the house, or when I vacuum. Likes to hide under the bed covers. We just learned to accept this behavior - both cats are very...
I think Sphynx are more active than Ragdoll, but they are not hyper.
Here is a couple of links, when you are ready to look for a breeder:
http://www.vadzilla.com/cat-breeds/sphynx
http://www.vadzilla.com/cat-breeds/ragdoll
I tried about a dozen "healthy" canned varieties with my two cats. They got tired of all of them quickly, with the exception of "Simply Nourish" (Petsmart brand) and "Sheba" (sold everywhere now, not grain-free). I also feed FreshPet refridgerated food ("Roasted meals" in 1 bags).
You have to...
I have been feeding my two kittens "Simply Nourish" brand (both canned and dry), with great success. Kitten-specific dry food they have is 40% protein, grain free, mostly chicken and turkey-based.